On-board data acquisition system for automatic shift system of vehicle

Data acquisition, analysis and calibrating system affiliated with the vehicle were developed for the research on the automatic shift system(ASS). Considering the vehicle hard environment such as vibration, high temperature, low temperature and electromagnetic disturbance, the most suitable project was selected. The approach for PC104 transfer data with ECU by serial communication was presented, and a solid state disk was used as a FLASH ROM. Some techniques including frequency-division of data were adopted in the software design in order to ensure the sampling frequency. The analytical and debugging software was contrived according to the characteristics of the ASS. The system plays an important role in the development of the ASS because of the good reliability and practicability in the application.